/*
 * Copyright 2022 Bytedance Inc.
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.bytedance.primus.webapp;

import org.apache.commons.io.IOUtils;
import org.apache.hadoop.yarn.webapp.View;
import java.io.IOException;
import java.io.InputStream;

public class StaticView extends View {

  protected StaticView() {
    this(null);
  }

  protected StaticView(View.ViewContext ctx) {
    super(ctx);
  }

  @Override
  public void render() {
    response().setContentType("application/x-octet-stream");
    String[] components = request().getRequestURI().split("/");
    String baseName = components[components.length - 1];
    if (baseName.endsWith(".js")) {
      response().setContentType("text/javascript; charset=UTF-8");
    } else if (baseName.endsWith(".css")) {
      response().setContentType("text/css; charset=UTF-8");
    }
    try {
      try (InputStream in = this.getClass().getClassLoader()
          .getResourceAsStream("webapps/primus/" + baseName)) {
        IOUtils.copy(in, outputStream());
      }
    } catch (IOException e) {
      LOG.error("", e);
    }
  }
}
